Well pumping apparatus



Feb. 8,1938. A. N. PORTER WELL PUMPING APPARATUS Filed Oct. 10, 1936 3 Sheets-Sheet 1 K R W 0 I Y m flm EN 0 v, I m f I A 8 U Feb. 8, 1 938.

A. N. PORTER WELL PUMPING APPARATUS 1936 3 Sheets-Sheet 2 Fined Oct. 10

ATTORNEY Feb. 8, 1938. A. N. PORTER I WELL PUMPING APPARATUS Filed Oct. 10, 1.956

ees

HIHWHHI 1 lluiilllin INYENTOR /l/berf N Par/ex ATTORNEY Patented Feb. 8, loss 2,107,498

UNE'E'ED STATES PATENT QFFICE WELL PUMPING APPARATUS Albert N. Porter, Tuisa, Okla, assignor to J. F. Darby, Tulsa, Okla.

Application October 10, 1936, Serial No. 105,011 12 Claims. (01. i k-4%) This invention relates to well pumping apparato oscillate in the arc of a circle with the truntus, particularly to a long stroke straight lift atnions 6 of the saddle as the center upon operation tachment for walking beams, pumping jacks and of a crank and pitman connected to the opposite other similar devices for producing reciprocatory end of a Walking beam (not shown) to reciprocate motion of a string of pumping rods, and has for a string of pumping rods as represented by the 5 ,its principal object to transpose arcuate movepolish rod 1. ment of a beam or the like into a vertical straight In ordinary practice, the pumping rod l is lift in direct axial alignment with the rods, theredirectly connected with the outer end of the beam by alleviating wear and bending action of the rods by a hanger frame, which causes the polish rod to and reducing the power required to actuate the bend back and forth as the beam swings on the 10 beam. opposite sides of its horizontal center, which It is also an important object of the present bending movement not only produces wear of the invention to provide an attachment which may be polish rod and stuffing box, but causes crystallizareadily adjusted to any standard type and length tion that soon results in breakage and expansive of beam. repairs. 15

In accomplishing these and other objects of the In the present invention the hanger 8 is not invention, 1' have provided improved details of directly connected with the walking beam but is structure, the preferred forms of which are illussuspended therefrom by a pair of bell crank levers trated in the accompanying drawings, wherein: 9 and H), the vertical arms II of which hang from Fig. 1 is a side elevational View of the operating the ends of a cross bolt 22 pivotally mounted in 20 end of a walking beam equipped with a long a saddle I3 that is rigidly attached to the upper stroke straight lift attachment embodying the face of the walking beam by suitable fastening features of the present invention. devices M.

Fig. 2 is a vertical section on the line 2-2, Fig. The arms I I of the bell cranks are spaced from 1, particularly illustrating the universal selfthe side faces of the walking beam by washers I5 25 aligning feature of the polish rod hanger. sleeved on the ends of the cross bolt between the Fig. 3 is a horizontal section on the line 3'3, sides of the saddle and the arms as best shown in Fig. 1, particularly illustrating the pivotal Fig. 2 and the arms are retained in engagement mounting of the cam tracks and rollers for con- With the washers by nuts [5 threaded on the ends trolling a vertical movement of the polish rod of the bolt and engaging the outer faces of the 30 hanger. arms H.

Fig. 4 is a side elevational View of a modified Connecting the opposite ends of the arms is a form of the invention, wherein the cam has fixed similar cross bolt l8 having its ends extending support on the headache post or rest for the through suitable bearing openings I 9 therein.

walking beam. spacing sleeves 20, and a central spherically 35 Fig. 5 is a vertical section on the line 5-5, shaped bearing 2| for mounting the cross head 4. 22 of the angle frame, the spacing sleeves 26 be- Fig. 6 is a vertical section through the polish ing of suitable length to retain the bell cranks in rod hanger illustrated in Fig. 4, the arms being spaced parallel relation. Nuts 23 are threaded shown in elevation. on the outer ends of the cross bolt 1 8 to retain 40 Fig. 7 is a View similar to Fig. 4 showing a 'furbell cranks thereon. ther modified form of the invention as applied to The cross head 22 includes base and cap seca rod hung on a conventional type of rod hanger. tions 26 and 25 having substantially semhspher- Fig. 8 is a vertical section on the line 8-8, ically shaped sockets 26 and 23 conforming to Fl'g- I the bearing 2|. The cap and base sections of the Fig. 9 is a horizontal section on the line 9-9, cross head are clamped about the bearing by suitable bolts 2? extending through mating flanges Fig. 10 is a side elevational View of a form of 28 and 28 on the respective sides of the crossthe invention as applied to a conventional pumphead sections as best illustrated in Fig. 3. ing jack. Extending laterally of the base section of the 50 Referring more in detail to the drawings: cross-head are ears 29 and 30 having openings 3| l designates a walking beam pivoted on the and 82 for passing the hang ds 3 a d. 34 upper end of a Samson post 2 by means of the which are suspended therefrom by nuts 35 and 36 usual saddle and side irons 3 and i respectively threaded on the projecting ends of the arms and whereby the Outer e d 5 of the beam is caused, seated against the upper faces of the ears as in conventional practice. The lower ends of the rods extend through similar openings 31 and 38 in a swivel head 39 that is retained on the arms by nuts Ml and 4! threaded on the lower ends of the rods and engaging the under face of the swivel head.

The polish rod i extends through a central vertical opening 42 in the swivel head and is suspended therein by nuts 43 screwed onto the projecting end of the rod or by a suitable poiish rod clamp engaging the upper face of the swivel head.

With the operation of the structure thus far described, the axis of the cross bolt l2 will move in an arc about the axis of the saddle trunnions 6. However, I provide means for retaining the axis of the cross bolt 18 in plane with the ex-' tended axis of the polish rod as indicated by the dot and dash line 44, Fig. 1, as now to be described.

Mounted on the walking beam at a point spaced'from the saddle I3 is a U-shaped bracket having the cross bar portion 45 thereof seating on the upper edge of the walking beam and the legs 41 depending from the sides of the beam toform a support for a cross bolt 48 extending below the beam l in exact horizontal alignment with the cross bolt I8 and the trunnion 6 when the beam is in the horizontal position illustrated Fig. l to pivotally mount cam members .9 and 50.

The cam members 49 and 58 each include vertical lever arm portions 5| carrying cam shaped tracks 52 and 53 at the upper ends thereof, the tracks 52 and 53 being secured to the lever portions 5| by connecting webs 54 to support the cam tracks in fixed relation therewith.

The lever arm portions 5| are pivotally mounted on the ends of the cross bolt 48 in such a manner as to support the central part of the cam in horizontal alignment with the cross bolt I8 when the beam is in horizontal position as shown in Fig. l. The lever arm portions are retained thereon by nuts 55 and 56 threaded on the proiecting ends of the bolt 48 as best illustrated in Fig. 3.

The lateral arms 51 and 58 of the bell cranks extend in the direction of the cam tracks and are provided with aligning openings 53 and 59 to pass a shaft 69 for rotataoly mounting wheels BI and 52 on the ends thereof which project outwardly from the bell crank arms and in position.

so that the peripheries 63 and 64 thereof engage the face of the cam tracks, the wheels being retained on the shaft by washers 65 and nuts 56 respectively sleeved and threaded on the outer ends of the shaft as best illustrated in Fig. 3.

In order to support the cam tracks in parallel vertical relation relatively to the extended axis of the polish rod, dining reciprocation of the beam, I provide tie rods El and '58 having their ends pivotally connected to the Samson post 2 and to the lever arms 5| of the cam track members respectively by bolts 59 and it located in a plane parallel with the plane extending through I the axes of the trunnions 6 and cross bolts 48.

The tie rods are of sufficient length so that the pivotal points of connection are spaced apart a distance equal to the distance between the axis of the trunnion 6 and the cross bolt 48. It is thus obvious that when the beam is oscillated, the links 6'? and 68 remain parallel with the plane extending through the axis of the trunnion 5 and cross bolt 48 previously described, thereby retaining the lever arms 5! in perpendicular position to prevent tilting of the cam tracks under respectively.

cam tracks are so shaped as to impart lateral throw to the wheels so that the axis of the cross head is kept in a perpendicular plane during the entire stro :e of the beam.

Figs. 4, 5 and 6 illustrate a modified form of the invention wherein a rod hanger i3 is suspended from the end of the beam. by links it pivotally mounted on trunnions '15 on the hanger similarly to the manner in which the arms of the bell crank levers suspended the cross head previously described in the preferred form of the invention and the wheel 15 is swingingly suspended by links H and 18 from a cross shaft 19 pivotally mounted in a bracket carried on the upper face of the beam adjacent the headache post 86 in ears 8'! and 38 a tie rod 39 that is pivotally connected to an ear it on the rod hanger by means of a pin 9|. 7 l

In this modification of the invention, the cam track is mounted in stationary position on the headache post BI and is shown as including a curved pipe 92 having ears 93 thereon for engaging bolts 94 projecting forwardly from the post to form a cam track'sfi on which the wheel 16 operates during oscillationof the beam.

In this form of the invention, the cam track 95 may be adjustably mounted on the post by the bolts in such a manner that the shape of the track can be varied so as to impart lateral movement of the rod hanger 13 during reciprocation of the beam.

The connecting or adjusting boits are shown as comprising I-bolts 91 having the heads 98 thereof pivotally. connected with the ears 93 and their shanks extending through openings 99 in the post to support the bolts in vertical position therein. Threaded on the ends of the bolts and engaging the respective sides of the post are nuts l0! and I I12 to adjust the relative spacing of selected points of the cam tracks from the post.

The polish rod is shown in this form of the invention as being secured to the rod hanger 13 by a conventional polish rod clamp H33.

. It is thus apparent that by adjusting the I- pending links 14 for retaining the polish rod hanger in vertical alignment throughout the length of beam stroke; l r

In Fig. '7 is illustrated a further modified form of the invention wherein the rod hanger N84 is of conventional design and showing an adapter I05 having spaced collars I06 and. ID? for clamping on the polish rod aboveand below the hanger The collars are connected by a bar portion 108 having an ear Hi9'on whichis pivotally mounted the tierod HD for ing the wheel and the rod hanger to impart lat eral movement to the hanger during reciprocation of the beam so that the hanger is retained cOnnectin vertical alignment with the rods throughout the entire stroke of the beam.

In this form of the invention, the cam track III is also mounted on the headache post and the wheel H2 is suspendingly supported by links II3 complementary to links TI and 18 of the form shown in Fig. 4. The cam is rigidly mounted on a beam H4 at its central portion and the ends are adjustably supported by the turnbuckles H5 and H6.

Fig. shows the adaptation of my invention to a conventional pumping jack I wherein the beam I 2I is reciprocated' by a bell crank lever I22 through a connecting link I23, the bell crank lever I24 being operated by a pull rod I24 as in conventional pumping jack practice.

The walking beam I2I is pivoted at its rear end I25 on the vertical post I 26 of the pumping jack and its forward end moves in an arc in the same manner as the walking beam illustrated in the other forms of the invention.

The vertical lift attachment shown in this form of the invention is identical to that illustrated in the form of the invention shown in Figs. 1, 2 and 3, so that the same numerals will relate to the corresponding parts of the apparatus shown in Fig. 10.

In order to remove some of the strain from the rods 61 and 68, the lever arm portions 5| of the cam track members may extend below the pivotal connection of the tie rods 61 and 68 and carry weights I21 which tend to retain the arms in perpendicular position during pivotal movement of the walking beam.

The operation of the form of invention shown in Fig. 1 is as follows:

Assuming that the walking beam is moving upwardly from its horizontal center, the cam track members are carried therewith, but due to the tie rods 61 and 68, they maintain their relative relation with the required path of travel of the polish rod. Even though the arcuate movement of the walking beam causes lateral shifting of the cam tracks in the direction of the post 2, the shape of the cam tracks cause the wheels to move in the direction of the extended axis of the polish rod to maintain the cross head connection in the desired vertical plane. During this shifting movement of the wheels relatively to the cam track, the bell cranks carrying the wheels are pivoted on the cross bolt I2.

As the beam oscillates in the opposite direction, the Wheels following the tracks maintain the relative position of the cross head and as the walking beam passes horizontal position, the wheels are again moved outwardly by the lower portions of the cam tracks to maintain the required relative position of the cross head.

The form of the invention shown in Fig. 4 operates in substantially the same manner as that of the preferred form; however, in this form of the invention, the cam is fixed and the lateral swinging movements of the arms are effected by the rollers 16 through the rod 89.

The construction shown in Fig. 7 operates in a similar manner to that shown in Fig. 4, except that the tie rod III] is connected to the adapter I05 on the polish rod to cause lateral movement of the conventional rod hanger during swinging movement of the beam to retain perpendicular alignment of the polish rod.

From the foregoing, it is apparent that I have provided a simple long stroke vertical lift attachment for use in connection with pivotally mounted beams of pumping apparatus and that the polish rod is always retained thereby in a vertical plane regardless of swinging arcuate movement of the beams.

What I claim and desire to secure by Letters Patent is:

1. In combination with a pumping apparatus including a pivoted beam, a straight lift attachment including a rod hanger movably carried by the beam, a cam member having vertical support relatively to the rod hanger and curved reversely to the arcuate travel of the end of the beam, and a wheel carried by the beam and operable on the cam member to retain the rod hanger in a vertical plane during actuation of the walking beam.

2. In combination with a pumping apparatus including a pivoted beam, a straight lift attachment including a polish rod hanger pivotally suspended from the beam, a polish rod carried by the polish rod hanger, a cam member pivoted on the beam, and a wheel carried by the beam and operable on the cam member to retain the polish rod hanger in the vertical plane of the polish rod during actuation of the walking beam.

3. In combination with a pumping apparatus including a pivoted beam, a straight lift attachment including a rod hanger movably carried on the beam, a cam member pivoted on the beam, a wheel having connection with the rod hanger and operable on the cam member to retain the polish rod hanger in the vertical plane of the polish rod during actuation of the walking beam, and means supporting the cam member in parallel relation with the polish rod hanger J a during movement of the beam.

4. In an apparatus of the character described including a supporting member, a beam member, means pivotally mounting the beam member on the supporting member, a polish rod hanger, means pivotally suspending the polish rod hanger from the end of the beam member, a cam carried by one of said members and having its ends curved reversely to the arcuate path of travel of the end of the beam, a wheel operable on the cam, and means for pivotally suspending the wheel from the beam member including means for effecting pivotal movement of the suspending means during pivoting of the beam member to impart a straight lift of the polish rod hanger.

5. In an apparatus of the character described including a supporting member, a beam member, means pivotally mounting the beam member on the supporting member, a polish rod, means movably supporting the polish rod from the beam member, a cam carried by one of said members and having its ends curved reversely to the arcuate path of travel of the end of the beam, a wheel operable on tne cam, and means for pivotally suspending the wheel from the beam member including means for eifecting pivotal movement of the polish rod supporting means during pivoting of the beam member to impart a straight lift of the polish rod.

6. In an apparatus of the character described including a supporting member, a beam member, means pivotally mounting the beam member on the supporting member, a polish rod hanger, means pivotally suspending the polish rod hanger from the beam member, a cam carried by one of said members, a wheel operable on the cam, means for pivotally suspending the wheel from the beam member including means for effecting pivotal movement of the suspending means during pivoting of the beam member to impart a Iii;

straight lift of thepolish rod hanger, and means adjustably connecting the cam member with its supporting member for selectively varying position of the cam relatively to the beam member.

'7. In combination with a pumping apparatus including a support and a pivoted beam on the support, a straight lift attachment including a bell crank lever pivotally connected with the beam, a polish rod hanger pivotally suspended from the bell crank, a wheel rotatably mounted on the bell crank lever, a cam track, means pivotally mounting the cam track on the beam, and a link connecting the cam track with the support for controlling movement of the cam track upon operation of the beam.

8. In combination with a pumping apparatus including a pivoted beam, a straight lift attachment including a polish rod hanger movably carried by the beam, means including a cam member for moving the polish rod hanger on the beam, and means for selectively changing position of the cam member relatively to the beam.

9. In an apparatus of the character described including a supporting member, a beam member, means pivotally mounting the beam member on the supporting member, a polish rod hanger, means pivotally suspending the polish rod hanger from the beam hanger, a cam carried by one of said members, a wheel operable on the cam, means for pivotally suspending the wheel from the beam member including means for efiecting pivotal movement of the suspending means during pivoting of the beam member to'impart a straight lift of the polish rod hanger, and means for selectively changing position of the cam relatively to the beam member.

10. In an apparatus of the character described including a supporting member, a beam member,

means pivotally mounting the beam member on the supporting member, a polish rod hanger, means movably supporting the polish rod hanger from the beam member, a curved cam carried by the support, a wheel operable on the cam, links for swingingly suspending the wheel directly from the beam member to follow the curvature of saidcam, and tie rods connected with the links means pivotally mounting the beam memberon the supporting member, a polish rod hanger, means movably supporting the polish rod hanger from the beam member, a curved cam carried' by' one of said members, a wheel operablelon the cam, and means for swingingly suspendingthe wheel'from the beam member to follow the,

curvature of said cam including-means for eifecting pivotal movement of said hanger supporting meansduring pivoting of-tne beam member to impart a straight lift of the polish rod hanger. l

12. In combination with a pumping apparatus including a pivoted beam, a straight liftattachment including a rod hanger movably carried by the beam, a cam member havinga vertical support relatively to the rod hanger and curved reverse: 1y to the arcuate travel of the beam, and a cam engaging member carried bylthe beam and operable on the cam member to retain the rod hanger in a, vertical plane, during'actuation of the walking beam. f

ALBERT, N. PORTER. 

